Influence of turbulent Prandtl number on heat transfer of a flat plate
| Autor: | A. Sh. Dorfman |
|---|---|
| Rok vydání: | 1985 |
| Předmět: |
Physics
Mechanical Engineering Prandtl number Heat transfer coefficient Mechanics Condensed Matter Physics Boundary layer thickness Nusselt number Physics::Fluid Dynamics symbols.namesake Boundary layer Flow separation Classical mechanics Mechanics of Materials Blasius boundary layer symbols Turbulent Prandtl number |
| Zdroj: | Journal of Applied Mechanics and Technical Physics. 25:572-575 |
| ISSN: | 1573-8620 0021-8944 |
| DOI: | 10.1007/bf00909994 |
| Popis: | In computations involving heat transfer in turbulent flow past bodies it is necessary to assume turbulent Prandtl number distribution across the boundary layer. A review and comparison of results obtained by different authors are given, e.g., in [1–5]. Unfortunately, the existing data are so contradictory that, at present, it does not appear to be possible to establish reliably a function that determines turbulent Prandtl number distribution across the boundary layer. The absence of sufficiently reliable and general results on the distribution of turbulent Prandtl number led to the result that in the majority of studies conducted in earlier years its value was assumed a constant and either close to or equal to one. The effect of turbulent Prandtl number on the intensity of heat transfer from a flat plate is numerically investigated in the present paper. The thermal, turbulent boundary layer equation is integrated for this purpose at different values of turbulent Prandtl number and results are compared with experimental data. Results from [6], where the thermal boundary layer was numerically integrated with Prt=1 and compared with experimental data, were used for comparison in the present paper. The same numerical integration procedure as in [6] was used here. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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